MONARDA FISTULOSA. 



83 



by removing the lower lip or the upper one, and by splitting the tube for 

 its entire length, each type being represented by 2 heads. The corollas 

 of 5 Geranium flowers were replaced by crepe-paper ones representing the 

 colors red, yellow, blue, green, and white, and these were grouped with 

 5 normal flowers. 



Second series. — The two records were made on August 14 from 8 h 20 m 

 to 10 h 40 m a. m., in two clumps of Monarda 3 meters apart. The number 

 of normal and modified Monarda heads and normal Geranium flowers was 

 approximately the same. Five heads were mutilated by shortening the 

 corollas of one to half the normal length, by removing the upper lip in the 

 second, the lower lip in the third, upper lip and stamens in the fourth, and 

 both lips in the fifth. The flowers of one head and half of those of another 

 were replaced by corollas of Gilia aggregata, while flowers of Chamaenerium 

 angustifolium were substituted for half of those of a third head. In addition, 

 two racemes of the latter species were inserted in bottles of water and placed 

 in the clump. 



Calendar 1. 



8 h 20 m 

 8 22 

 8 24 

 8 26 



8 29 



8 38 

 8 40 



8 42 

 8 44 

 8 45 

 8 48 

 8 53 



8 54 

 8 55 

 8 56 



8 57 

 8 59 



9 00 

 9 03 



9 14 



9 15 



9 19 



Erynnis, normal 2. 



Erynnis, normal 1, 7, 2, 1; 70 seconds. 



Clisodon, normal 7, 1, 4, 14. 



Erynnis, normal 3, 2; Chamaenerium 

 2, 9; 80 seconds. 



Erynnis, normal 3; 60 seconds; Gera- 

 nium 2, 2, 1. 



Erynnis, normal 3, 1, 4. 



Erynnis, normal 4, upper lip off 4; 

 Clisodon, normal 1. 



Bombus juxtus, Chamaenerium 1. 



Clisodon, normal 4, 5. 



Erynnis, normal 1, 2, 3, 3, 5. 



Bombus morrisoni, normal 8. 



Erynnis, normal 2, touched Chamae- 

 nerium. 



Clisodon, normal 1, 5, 3, 2. 



Erynnis, upper lip off 3. 



Erynnis, visits Chamaenerium 2, but 

 takes no nectar, upper lip off 2, 

 normal 2, lights on leaf. 



Clisodon, normal 6. 



Bombus appositus, 3 to 4 flowers each 

 of 3 heads (total normal 10). 



Erynnis, normal 3, upper lip off 2, leaf. 



Erynnis, normal 2, 1, 1, 3; 55 seconds; 

 upper lip and stamens off 4, 

 upper lip off 5; B. juxtus, normal 

 5, shortened corolla 3, both lips 

 off 1, upper lip off 1. 



Erynnis, upper lip off 12; 2 minutes; 

 Geranium, normal 2, 3; 30 

 seconds. Clisodon, normal 8, 

 10, 12, 10; upper lip off 5; 40 

 seconds; normal 5, 40 seconds. 



Clisodon, normal 6, 6, inspected 

 Chamaenerium. 



Erynnis, normal 3, Gilia 1, Monarda, 

 1 in mixed head, tries Chamae- 

 nerium vainly. 



Erynnis, Chamaenerium 3. 



9 h 21 D 

 9 23 

 9 25 



9 30 



9 33 

 9 35 



9 59 

 10 04 



10 09 

 10 13 



Erynnis, Chamaenerium 2, normal 2" 

 Erynnis, normal 2, 1, Chamaenerium 1. 

 Erynnis, normal 4, Chamaenerium 1, 



normal 5, Gilia 2. 

 Bombus morrisoni, normal 5; Argyn- 



nis, normal 12, 30 seconds; 



Chamaenerium 6, 20 seconds. 

 Erynnis merely lands on 2 horizontal 



Monarda. 

 Erynnis, normal 3, Chamaenerium 2, 



both lips off 2, upper and stamens 



off 9; Clisodon, normal 10, 12, 



3, 9, 5, 6. 



Clisodon, normal 2, 3, 2, 4, 6, 7, 3, 5, 

 8, 6, 1, 3. 



Bombus appositus, normal 6, 8, 5, 4, 

 7, 8, 5, 8, 4, 4, 3, 8; second 

 individual normal 4, 4, upper lip 

 off 12, 2 minutes; third indi- 

 vidual normal 8, 10, 12, 6 

 Monarda flowers of mixed Gilia 

 head, normal 4, 8, Chamaenerium 

 8; Clisodon most flowers of 3 

 heads (total normal 25), all 

 flowers of 4 heads, often twice 

 (total normal 60), 5 heads some 

 twice (total normal 53), 6 

 heads (total normal 58). 



Bombus juxtus, normal 2, 1, 5, 6, 



1, 3, 6, 5. 



Bombus juxtus, normal 6, 2, 1, 1, 1, 



2, 2, 2, 8, 1, 2, 10, 2, upper lip 

 and stamens off 6, then goes 

 vainly to shortened corollas; 

 second individual normal 3, 2. 



Bombus appositus, normal 3, 2, 2, 4, 



4, 1, 1, 2, 2, 2, 3, 9, 4, 2. 

 Bombus appositus, both lips off 4, 



upper lip and stamens off 7, 

 upper lip off 5, normal 11, 6, 1, 

 4, 1, 4, 5, 6; 1 minute. 



